/* Editorial index for the subsystem detail pages. */
.subsystem-landing-page { background: var(--page-bg); }
.subsystem-landing-hero {
  --page-bg: #08090c;
  --text: #f7f6f4;
  --text-strong: #fff;
  --text-soft: rgba(255,255,255,.78);
  --text-muted: rgba(255,255,255,.58);
  min-height: 0;
  padding: clamp(46px, 6vw, 82px) var(--site-gutter);
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: clamp(34px, 7vw, 100px);
  background:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px),
    var(--page-bg);
  background-size: 64px 64px;
}
.subsystem-landing-hero::before { left: 0; width: 3px; }
.subsystem-landing-copy { justify-self: end; width: min(100%, 520px); }
.subsystem-landing-copy .ss-eyebrow { display: flex; align-items: center; gap: 10px; }
.subsystem-landing-copy .ss-eyebrow span { color: var(--text-muted); }
.subsystem-landing-copy h1 { max-width: 10ch; margin: 18px 0 24px; font: 800 clamp(3.7rem, 7vw, 6.8rem)/.84 var(--racing); letter-spacing: -.04em; }
.subsystem-landing-copy h1 em { color: var(--red); font: 400 .8em/.95 var(--ashwa); letter-spacing: -.035em; text-transform: none; }
.subsystem-landing-copy .ss-hero-intro { max-width: 450px; }
.subsystem-landing-cta { display: inline-flex; align-items: center; gap: 14px; margin-top: 28px; padding-bottom: 8px; border-bottom: 2px solid var(--red); color: var(--text-strong); font: 700 .82rem/1 var(--display); letter-spacing: .14em; text-decoration: none; text-transform: uppercase; transition: gap .2s ease; }
.subsystem-landing-cta:hover { gap: 21px; }
.subsystem-landing-cta span { color: var(--red); font-size: 1.1rem; }
.subsystem-landing-image { position: relative; justify-self: stretch; align-self: center; min-width: 0; aspect-ratio: 1.55; margin: 0; border: 1px solid var(--border-strong); background: var(--surface); box-shadow: 0 28px 80px var(--shadow); }
.subsystem-landing-image::before { position: absolute; z-index: 1; inset: 0; border-top: 3px solid var(--red); content: ""; pointer-events: none; }
.subsystem-landing-image img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center 52%; }
.subsystem-landing-image figcaption { position: absolute; right: 0; bottom: 0; left: 0; display: flex; justify-content: space-between; gap: 12px; padding: 28px 16px 13px; background: linear-gradient(transparent, rgba(8,9,12,.82)); color: rgba(255,255,255,.76); font: 600 .6rem/1.2 var(--display); letter-spacing: .16em; }
.subsystem-landing-index { position: absolute; right: var(--site-gutter); bottom: 16px; color: var(--text-muted); font: 600 .56rem/1 var(--display); letter-spacing: .18em; }

html[data-theme="light"] body.subsystem-landing-page .subsystem-landing-hero {
  --page-bg: #fff;
  --text: #111216;
  --text-strong: #08090c;
  --text-soft: rgba(17, 18, 22, .78);
  --text-muted: rgba(17, 18, 22, .58);
  --border: rgba(10, 10, 10, .12);
  --border-strong: rgba(10, 10, 10, .2);
  --surface: #eeece9;
  --shadow: rgba(0, 0, 0, .14);
  color: var(--text);
  background:
    linear-gradient(rgba(8, 9, 12, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(8, 9, 12, .035) 1px, transparent 1px),
    #fff;
}
html[data-theme="light"] body.subsystem-landing-page .subsystem-landing-hero::before {
  background-image: linear-gradient(rgba(8, 9, 12, .035) 1px, transparent 1px), linear-gradient(90deg, rgba(8, 9, 12, .035) 1px, transparent 1px);
}
html[data-theme="light"] body.subsystem-landing-page .subsystem-landing-copy h1 { color: #08090c; }
html[data-theme="light"] body.subsystem-landing-page .subsystem-landing-copy .ss-hero-intro { color: rgba(17, 18, 22, .78); }

.subsystem-landing-section { padding: clamp(52px, 7vw, 92px) var(--site-gutter); background: var(--section-bg); border-bottom: 1px solid var(--border); }
.subsystem-landing-section--operations { background: var(--page-bg); }
.subsystem-landing-inner { width: var(--wrap); max-width: 1180px; margin-inline: auto; }
.subsystem-landing-heading { display: flex; align-items: end; justify-content: space-between; gap: 36px; margin-bottom: 30px; }
.subsystem-landing-kicker { margin: 0 0 12px; color: var(--red); font: 700 .7rem/1.2 var(--display); letter-spacing: .17em; text-transform: uppercase; }
.subsystem-landing-heading h2 { margin: 0; color: var(--text-strong); font: 800 clamp(2.5rem, 5vw, 4.5rem)/.9 var(--display); letter-spacing: -.025em; text-transform: uppercase; }
.subsystem-landing-heading h2 em { color: var(--red); font: 400 .76em/1 var(--ashwa); letter-spacing: 0; text-transform: none; }
.subsystem-landing-heading > p { max-width: 390px; margin: 0 0 2px; color: var(--text-soft); font-size: .96rem; line-height: 1.7; }
.subsystem-landing-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.subsystem-card { position: relative; display: flex; min-height: 248px; flex-direction: column; align-items: flex-start; padding: clamp(20px, 2.2vw, 30px); overflow: hidden; border: 1px solid var(--border); background: var(--surface); color: var(--text); text-decoration: none; transition: transform .25s var(--expo), border-color .25s ease, background .25s ease; }
.subsystem-card::before { position: absolute; top: 0; left: 0; width: 3px; height: 0; background: var(--red); content: ""; transition: height .25s var(--expo); }
.subsystem-card:hover, .subsystem-card:focus-visible { transform: translateY(-3px); border-color: var(--border-strong); background: var(--surface-hi); }
.subsystem-card:hover::before, .subsystem-card:focus-visible::before { height: 100%; }
.subsystem-card:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }
.subsystem-card-index { position: absolute; top: 17px; right: 19px; color: color-mix(in srgb, var(--text) 16%, transparent); font: 800 2.8rem/.9 var(--display); }
.subsystem-card-code { max-width: calc(100% - 45px); color: var(--red); font: 700 .64rem/1.35 var(--display); letter-spacing: .15em; }
.subsystem-card h3 { max-width: 17ch; margin: 26px 0 8px; color: var(--text-strong); font: 700 clamp(1.35rem, 2vw, 1.75rem)/1 var(--display); text-transform: uppercase; }
.subsystem-card p { max-width: 36ch; margin: 0 0 22px; color: var(--text-soft); font-size: .88rem; line-height: 1.55; }
.subsystem-card-link { display: flex; align-items: center; justify-content: space-between; gap: 14px; width: 100%; margin-top: auto; padding-top: 12px; border-top: 1px solid var(--border); color: var(--text-strong); font: 700 .68rem/1 var(--display); letter-spacing: .12em; text-transform: uppercase; }
.subsystem-card-link b { color: var(--red); font-size: 1rem; transition: transform .2s ease; }
.subsystem-card:hover .subsystem-card-link b { transform: translate(3px, -3px); }

@media (max-width: 850px) {
  .subsystem-landing-hero { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 30px; }
  .subsystem-landing-copy h1 { font-size: clamp(3.2rem, 7.5vw, 5rem); }
  .subsystem-landing-heading { align-items: flex-start; flex-direction: column; gap: 14px; }
  .subsystem-landing-heading > p { max-width: 560px; }
  .subsystem-landing-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
  .subsystem-landing-hero { grid-template-columns: 1fr; gap: 30px; padding-block: 40px 54px; }
  .subsystem-landing-copy { justify-self: start; }
  .subsystem-landing-copy h1 { max-width: 11ch; margin-block: 14px 19px; font-size: clamp(3.2rem, 13vw, 5rem); }
  .subsystem-landing-image { width: 100%; aspect-ratio: 1.45; }
  .subsystem-landing-index { display: none; }
  .subsystem-landing-heading h2 { font-size: clamp(2.5rem, 11vw, 3.6rem); }
  .subsystem-landing-grid { grid-template-columns: 1fr; gap: 8px; }
  .subsystem-card { min-height: 220px; }
}
@media (prefers-reduced-motion: reduce) {
  .subsystem-card, .subsystem-card::before, .subsystem-card-link b, .subsystem-landing-cta { transition: none; }
}